Road-scraper



(No Model.)

2 sheetssheet 2.

H.. L. JACOBS 8c T. H. STAGG.

ROAD SORAPBR.

No. 393,434. Patented Nov. 27, 1333.

N. PETERS, Fham-umogrwmr, wnhingtan. D. c.

UNITED STATES PATENT OFFICE.

HENRY L. JACOBS AND THOMAS H. STAGG, OF COLUMBUS, OHIO, ASSIGNORS TO FREDERICK C. AUSTIN, OF CHICAGO, ILLINOIS.

ROAD-SCRAPER.

SPECIFICATION forming part of Letters Patent No. 393.434, dated November 27, 1888.

Application filed July 10, 1888.

To all whom, it may concern:

Beit known that we, HENRY L. J .Icons and THoMAs H. Smeer, both citizens of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented a certain new and useful Improvement in Road- Serapers, of which the following is a specification.

In a road scraper characterized by our inlo vention the scraper-blade is arranged so that it may be shifted bodily in a direction trans versely to the line of progression, and hence be thrown or shifted toward either side of the road, and as a means for attaining such end i 5 the scraper-blade has a shifting connection with the hangers or suspending devices,which are capable of vertical adjustment independently of one another, whereby by adjusting one of the hangers so as to. lift the scraper- 2o blade at one end it will as a result thereof automatically shift in the direction of its lower end. As a simple and exceedingly powerful means for either raising the scraper-blade clear ofthe ground or lowering and forcing the scraperblade into the ground, the hand-levers,

which can be operated by an attendant standing upon the machine, are connected with the scraper-blade through the medium of hangers, each involving the principle of an elbow-joint 3o or toggle-lever, in which way the employment of a spring or springs for oating the scraperblade and assisting the manual operation of raising the scraper-blade can be entirely dispensed with, in addition to which the scraperblade can with comparatively little effort be forced to any desired depth into the ground and so held as long as may be necessary. The togglelevers constitute efhcient independent hangers, which can in effect be shortened or 4o vertically adjusted, for the purpose of raising either end of the scraper-blade, and hence, in addition to their utility,irrespeetive of the side shift of the scraper, the feature oflsaid compound or toggle levers,'in combination with the shifting scraperblade, constitutes a further matter of improvement. It is, however, understood that the distinctive feature of a scraper-blade arranged so that when raised at one end it will shift toward its lower end, or 5o toward the side of the machine whereat its Serial No. 279,575. (No model.)

temporarily lower end may be, is not dependent upon the particular construction of hangers, since various forms or constructions of adjustable hangers or suspending devices could obviously be employed in place of hangers formed by toggle or compound levers. A road-scraper involving our invention also comprises certain details of construction constituting further matters of improvement and serving to increase the general utility and efii- 6o ciency of the machine, as hereinafter fully set forth. f

In the drawings, Figure 1 representsin side elevation a road scraper` embodying the'principles of our invention. Fig. 2 represents a 65 top plan view of the middle portion of the same. Fig. 3 represents a transverse section taken on a plane indicated by line 3 3, Fig. l. Figs. 4 and 5 represent certain details.

The scraper-blade A is suitably connected 7o with a laterally-swinging draft-bar, B, which, by reason of its lateral swing, permits a bodily shift or swing toward either side of the machine.

To the hangers by which the scraper-blade can be raised and lowered is attached a bar, C, arranged transversely to the lengt-h of the machine and adapted to serve as a track for the sheaves or rolls D on a couple of bearings or brackets, d, with which the scraper-blade 8c is suitably connected. By such arrangement, when either one of the hangers is raised or adjusted, so as to raise one end of the scraperblade, (for example, as in Fig. 3,) the inclination of the scraper-blade will cause it to move toward the side of the machine whereat its lower end will be found, the rolling of the rolls along the bar, while serving to obviate friction and permitting the scraper-blade and its connections with the rolls to readily run 9o down the incline, being in effect a shifting or sliding connection between the scraper-blade and the rod, it being, however, highly desirable to provide rolls in the shifting connection, so as to lessen friction and allow the scraper to shift freely by gravity when lifted at one end. As a preferred matter of detail, however, the scraper-blade is suitably connected with the bearings cl, having rolls arranged to run upon the rod that is attached to the ad- 10o justable hangers or suspension devices, since to attach the rolls to the suspension devices and permit the bar to move along the rolls would necessitate the employment of an objcctionably long bar.

Thile no limitation is herein placed upon the mode of connecting the scraper-blade with rolls D, it may be observed that as a simple expedient the bearings d, in which said rolls are journaled, are secured to the circle E, and the part-circular bar F, having downwardlybent end portions that are attached to the seraper-blade,is adj nstably connected with the circle E by a cross-bar, G, whereby the scraperw blade can be turned horizontally about the center of the circle, and hence be set more or less oblique to the line of progression.

The hand-lcvers H are fulcrumed upon the body-frame I ol' the machine and arranged within convenient reach of an attendant standing upon the rear platform. These handlevers are connected with the compound or tog gle levers K by means of links or connecting rods L, having their rear ends pivotally attached to the hand-levers and their forward ends pivotally attached to the togglelcvers at the joints in the latter.

Each toggle or compound lever comprises two pivotally-connccted links, whereofthe one link, 7.', is at ils upper end pivotally attached to one of a pair of brackets, M, while the other link, IJ, is connected to one of the ends ofthe bar C. By the foregoing arrangement the attendant can readily raise and lower the scraper and also force the scraper down into the ground, it being observed that in illustration of the great power which can be exerted by the attendant he can at will operate either handlever, so as to raise one of the rear wheels entirely clear of the ground, and hence t-he use ofajack for lifting the rear corners of the machine when it becomes necessary to apply axlegrease to the axles is avoided. In fact, by operating both hand-levers both rear whecs can at one time be raised from the ground, although as a matter of practice the raising of but one rear wheel at a time is necessary.

In order to prevent the rod or bar C from binding against the hangers when either or both hand-levers are swung back for the purpose of raising the scraper-blade, each roll D is flanged along its rear end, as at d', Figs. 4t and 5, and the roll flared toward the flange, in which way the free travel of the rod C along the rolls will at all times be insured.

Each bracket is preferably made of an invertcd-V shape; but, regardless of its particular shape, the bracket is adapted to permit the upper link of the toggle or compound lever allotted to it to be adjnstably connected with the bracket. As a simple mode of construction, cach bracket is at its upper end provided with a bent arm or top portion, m, having a line of perforations for a bolt, by which the link can be adjustably pivoted to the bracket,

it being understood that while the link could be pivoted to the outer downwardly-bent portion of said upper part, m, of the bracket, it is preferably pivoted between the two sides of said bent portion. The foregoing construction of bracket, while light and simple, is exceedingly strong, and by adj nstably attaching the links k to the brackets,the points from which the toggle or compound levers are suspended can be shifted in height.

\Vhat wc claim as our invention isl. In a roadscraper, the combination, with a couple of vertically-adj ustable scraper-bladesuspending devices operative independently of one another to lift the scraper at either end, of a cross-rod supported by said suspending devices, and the scraper-blade suspended from the rod by a shifting connection, permitting the scraper to shift toward either end of the same, whercbyby raising the rod at one end the scraper-blade can shift endwise by gravity, substantially as set forth.

2. In a rOadscraper, the combination, with the scraper blade and a couple of hangers which can be independently operated to raise or lower either or bot-h ends of the scraperblade, of a rod connecting the two hangers, and rollers connected with the scraperblade and supported upon said rod, substantially as and for the purpose set forth.

In a roadscraper, the combination, with the scraper-blade-suspending hangers, of the scraper-blade, the rod C, attached to the hangers, andthe rolls arranged upon the rod and journaled in bearings d, substantially'as set forth.v

4. In a. road-scraper, the eombinatiomwith the scraper-blade, of the hangers which serve to suspend the scraper, comprising cach an upper link, lr, and a lower link, k', pivotally connected to form an elbow-joint which is hung at its upper end, whereby the scraper can be raised and lowered and its height determined by the closing and opening of the elbowjoint, substantially as set forth.

5. In a road'scraper, the combination, with the scraper-blade, of the toggle-levers K, the hand-levers H, and the links connecting the hand-levers with the toggle-levers, substantially as described.

6. In a road-scraper, the combination, with the toggle or compound levers, of the :rod attached to the said levers,and the scraper-blade connected with rolls which are supported upon said rod, substantially as described.

7. In a road-scraper, the combination, with the toggle or compound levers, and means, substantially as set forth, for operating the same, of the rod attached to the said levers, and the scraper connected with rolls D, which are arranged upon said rod, substantially as described.

S. The brackets arranged upon the bodyframe and constructed with the upper bent portions, m., to which the links of the hangers IOO for suspending thc scraper-blade are-attached, or both hand-levers maybe swung back to lift substantially as and for the purpose described. the scraper, substantially as set forth.

9. The combination, with the rod C, attached to a hanger, K, and link-connections between HENRY L. JACOBS. 5 said hangers and the hand1evers,of the scrap- THOMAS H. STAGG.

er-blade provided with ilanged rolls D, which Vitnesses:

rest upon the rod, the flanges of said rolls be- T. M. LIVESAY,

ing arranged to prevent binding when either CHAS. E. BURR. 

